How to display only the last 50 bars with renko?

[zoli2750]

Hi,
reading only the last 50 rows from the csv file is not suitable for not timebased charts, or when the timebased data file's granulation differs from the plotted timeframe.
Though, dropping some of the bars from the left will be also a task for the animation also,
I'm asking it if there are already a solution for it?
(did not found in the codes a 'maxbars' like property)